Illusions adjectives are listed in this post. Each word below can often be found in front of the noun illusions in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing ILLUSIONS.
absurd, beautiful, bright, certain, cognitive, dangerous, dear, fair
false, few, fewer, first, fond, generous, grand, great
human, last, lost, magical, many, mere, more, necessary
new, old, only, optical, other, own, perceptual, pleasing
political, popular, positive, romantic, same, similar, spectral, strange
subjective, such, sweet, vain, various, visual, youthful
Hope this word list had the adjective used with illusions you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.